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A CT scan of the abdomen (belly) and pelvis exposes a person to about 10 mSv. A PET/CT exposes you to about 25 mSv of radiation. This is equal to about 8 years of average background radiation exposure. Keep in mind that these are estimates for an average-sized adult.
7 Μαΐ 2024 · The low doses of radiation used in CT scans have not been shown to cause long-term harm. But for repeated scans, there may be a small increase in the lifetime risk of cancer. This can affect children more than adults.
The main risks associated with CT scans are incidental results, leading to unneeded, possibly invasive, follow-up tests that may present additional risks and the increased possibility of cancer...
CT scans are medical imaging tests that use ionizing radiation to create cross-sectional (slices) pictures inside selected areas of the body from different angles. The images from CT scans can show internal organs, blood vessels, soft tissues, and bones. What you should know.
Tell the radiographer if you feel unwell after the scan. If you have lots of CT scans, there's a very small chance the radiation from the X-rays can cause cancer. The doctors will weigh up the risks before giving you a scan and discuss this with you.
The UCSF Risks of Radiation page describes the risk of repeated CT scan imaging in the context of everyday, normal radiation exposure.
Are there risks? What are examples of NIBIB-funded projects using CT? What is a computed tomography (CT) scan?
